Tuddenham and Snyder obtained the following results for 6

Maiclubk

Maiclubk

Answered question

2021-02-24

Tuddenham and Snyder obtained the following results for 66 California boys at ages 6 and 18 (the scatter diagram is football-shaped):
average height at 63 feet 10 inches, SD1.7 inches
average height at 185 feet 10 inches, SD2.5 inches, r0.80
a) Find the r.m.s. error for the regression prediction of height at 18 from height at 6. b) Find the r.m.s. error for the regression prediction of height at 6 from height at 18.

Answer & Explanation

hesgidiauE

hesgidiauE

Skilled2021-02-25Added 106 answers

(1r2)SDy
a) The r.m.s. error for the regression prediction of height at 18 from height at 6: in this case:
10.822.5=10.642.5=0.362.5=0.62.5=1.5
b) The r.m.s. error for the regression prediction of height at 6 from height at 18:
10.821.7=10.641.7=0.361.7=0.61.7=1.02
Answer: a) 1.5, b)1.02

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